New version of OpenLB was released. Download here OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Identification of Geometric Model Errors in Multiphase Flow Simulations › Reply To: Identification of Geometric Model Errors in Multiphase Flow Simulations February 19, 2025 at 10:15 pm #9894 mathiasKeymaster Did you check on the material numbers? Are they set correctly?